Alright, let's work through 18939327 times 72101733 step by step
18939327 × 72101733 = 72101733 × (18939327)
+ 72101733 × 7 that results in 504712131
+ 72101733 × 20 that is equal 1442034660
+ 72101733 × 300 yielding 21630519900
+ 72101733 × 9000 giving us 648915597000
+ 72101733 × 30000 that results in 2163051990000
+ 72101733 × 900000 that is equal 64891559700000
+ 72101733 × 8000000 that results in 576813864000000
+ 72101733 × 10000000 what gives us 721017330000000

= 1365558298553691
